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公开(公告)号：AU3606701A
公开(公告)日：2002-05-21
申请号：AU3606701
申请日：2001-03-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： YUASA MASASHI , UEMURA SHUZO , YAMADA HIROSHI , FUKUI HIDEKI , HAMANO YASUKI , YOKOYAMA NAOKI
Abstract: Respective evaporators are set to a proper value in evaporation temperature and the efficiency in refrigeration cycle is enhanced, resulting in a reduction of energy consumption. A refrigerating unit and a refrigerator comprise a compressor, a condenser, a plurality of evaporators connected in series, a refrigerant flow rate adjustable unit and a refrigerant, thereby constituting a refrigeration cycle. The refrigerant flow rate adjustable unit controls each respective evaporation temperature of the plurality of evaporators. Preferably, the refrigeration unit further comprises a bypass circuit bypassing at least one of the plurality of evaporators and, when needs arise, the refrigerant is channeled through the bypass circuit. The refrigerant flow rate adjustable unit controls a flow rate of the refrigerant such that an evaporation temperature of the respective evaporators located at the upstream side of the refrigeration cycle is made higher than an evaporation temperature of the respective evaporators located at the downstream side thereof.
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公开(公告)号：EP1344997A4
公开(公告)日：2005-11-16
申请号：EP01908271
申请日：2001-03-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： YUASA MASASHI , KAMIMURA SHUZO , YAMADA HIROSHI , FUKUI HIDEKI , HAMANO YASUKI , YOKOYAMA NAOKI
CPC classification number: F25B5/04 , F25B5/00 , F25B2700/2117 , F25D11/022 , F25D17/065 , F25D29/00 , F25D2317/0682 , F25D2400/04 , F25D2400/30 , F25D2700/12 , F25D2700/122
Abstract: The respective evaporators have proper evaporation temperatures to improve the freezing cycle efficiency, resulting in the reduction of energy consumption. The freezer and refrigerator are provided with a compressor, a condenser, a plurality of series-connected evaporators, a refrigerant flow rate changing device, and a refrigerant, these forming a refrigerating cycle. The refrigerant flow rate changing device controls respective evaporation temperatures for the plurality of evaporators. Desirably, the freezer further includes a bypass circuit which bypasses at least one evaporator, and the refrigerant passes through the bypass circuit as needed. The refrigerant flow rate changing device controls the flow rate of the refrigerant such that the evaporation temperatures for the evaporators positioned on the upstream side of the refrigerating cycle are higher than those for the evaporators positioned on the downstream side.
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Patent Agency Ranking
公开(公告)号：JP2002295954A
公开(公告)日：2002-10-09
申请号：JP2001098688
申请日：2001-03-30
Applicant: MATSUSHITA REFRIGERATION
Inventor： SHIMIZU TAKESHI , NAKANO AKIRA , KAMISAKO TOYOSHI , NAKANISHI KAZUYA , YOKOYAMA NAOKI
Abstract: PROBLEM TO BE SOLVED: To obtain a refrigerator provided, on the bottom of the body thereof, with a duct having a condenser in which undercooling of the condenser and compressor is prevented even when dust adheres to the duct. SOLUTION: The refrigerator comprises a compressor 34 disposed at the lower section of the refrigerator body 25 and a condenser 36 contained in a duct, a machine room 33 provided with a fan 41 for cooling the compressor 34 and the condenser 36, a partition panel 55 for partitioning the inside of the duct to the left and right, the suction air duct side having an air inlet 51 for sucking outer air on one side of the front part of the duct, and the delivery air duct side having an air outlet 53 for delivering sucked air on the other side wherein the partition panel 55 is provided with an opening 56 interconnecting the suction air duct side and the delivery air duct side so that an optimal cooling capacity of the refrigerator can be sustained even when dust adheres to the duct.
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公开(公告)号：JP2002147917A
公开(公告)日：2002-05-22
申请号：JP2000343294
申请日：2000-11-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： YUASA MASASHI , KAMIMURA SHUZO , YAMADA HIROSHI , FUKUI HIDEKI , HAMANO YASUKI , YOKOYAMA NAOKI
Abstract: PROBLEM TO BE SOLVED: To provide highly efficient refrigerating equipment and a refrigerator provided with the equipment, in which evaporation temperatures of a plurality of evaporators can be variably controlled, temperature variation in a cooling chamber is small. SOLUTION: A refrigerating cycle is constituted by providing a compressor 301, a condenser 302, a first evaporator 304 and a second evaporator 305 connected serially to each other, a refrigerant flow variable controller 306 such as a motorized expansion valve provided between the evaporators 304 and 305. Further, a bypass circuit 307 bypassing the evaporator 304 and the variable controller 306 is provided in the refrigerating cycle. Evaporation temperatures of the evaporators 304 and 305 are variably controlled by the controller 306. As required, the evaporator 304 is bypassed to optimize the cooling amount of the evaporators 304 and 305 to improve the efficiency of the refrigerating equipment and the storing quality of objects to be cooled.
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公开(公告)号：JP2000266436A
公开(公告)日：2000-09-29
申请号：JP6638899
申请日：1999-03-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： YOKOYAMA NAOKI , KINO AKIHIRO
IPC: F25D11/00
Abstract: PROBLEM TO BE SOLVED: To reduce the quantity of refrigerant being encapsulated by providing a combustible refrigerant encapsulated in a refrigerating cycle, a refrigerating machine oil compatible with the refrigerant, a storage chamber being cooled through refrigerating cycle, and a body including the storage chamber provided with at least one door thereby preventing the refrigerant from standing in a gas/liquid separator. SOLUTION: A storage chamber 23 comprises a body 21 and a door 22. When a compressor 26 is operated, high temperature high pressure combustible refrigerant 29 delivered from the compressor 26 flows into a condenser 27 where it is condensed and liquefied through heat exchange with the outdoor air and flows into an expansion mechanism 28. The combustible refrigerant is reduced in pressure by the expansion mechanism 28, evaporated in an evaporator 25 and returned back to the compressor 26 after exchanging heat with air in the refrigerator. Since a place causing stagnation of highly viscous refrigerating machine oil 30 is not present in the vicinity of the low temperature evaporator 25, the combustible refrigerant 29 circulates without dissolving into the refrigerating machine oil 30 standing in the cycle and the refrigerating cycle is repeated.
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公开(公告)号：JP2001116419A
公开(公告)日：2001-04-27
申请号：JP30097799
申请日：1999-10-22
Applicant: MATSUSHITA REFRIGERATION
Inventor： SHIMIZU TAKESHI , TANAKA MASAAKI , NISHIMURA KOICHI , YOKOYAMA NAOKI
Abstract: PROBLEM TO BE SOLVED: To prevent the deterioration of the freshness of an article to be stored in the case of leaking a combustible refrigerant in a refrigerator using the combustible refrigerant. SOLUTION: The refrigerator comprises a compressor 19, a condenser 20, a pressure reducing mechanism 21, and an evaporator 10 to be functionally connected, a refrigerating cycle for sealing a combustible refrigerant, a refrigerant leakage sensing means 16 and an alarming means 17 for alarming a fault by the signal from the means 16. In this case, when the means 16 detects leakage of the refrigerant, the compressor 19 is continuously operated, and hence a temperature rise in the refrigerator is suppressed as much as possible, and the deterioration of the freshness of the stored material is reduced.
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公开(公告)号：JP2001108316A
公开(公告)日：2001-04-20
申请号：JP28133199
申请日：1999-10-01
Applicant: MATSUSHITA REFRIGERATION
Inventor： KINO AKIHIRO , YOKOYAMA NAOKI , YONEMURA MINORU
Abstract: PROBLEM TO BE SOLVED: To solve the problem of increasing a refrigerant leakage amount in case of refrigerant leakage due to an accident when using a combustible refrigerant to cause an excess refrigerant to be needed in a sealed refrigerant necessary for operating a refrigerating operation from the result of staying the refrigerant without flowing of a liquid phase refrigerant by different flowing speeds of vapor phase and the liquid phase refrigerants and vertical flow of the refrigerant according to a flowing state or flowing speed in two phase of vapor and liquid phase flows of the refrigerant in tubes in the case of moving the refrigerant during upward piping of a condenser. SOLUTION: The refrigerator comprises a refrigerating cycle having a body 20, a compressor 21 installed in the body 20, a condenser 22, a capillary tube 23, and an evaporator 24 sequentially annularly connected, and a combustible refrigerant 25 such as a butane, an isobutene, a propane or the like sealed in the cycle. In this case, refrigerant piping 26 for constituting the condenser 22 is disposed on a horizontal surface.
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